Visit your local library: On a recent Saturday, a total of 1299 people visited a local library. Of these people, 248 were under age 10, 460 were aged 10-18, 158 were aged 19-30, and the rest were more thah 30 years old. One person is sampled at random. (a) What is the probability that the person is less than 19 years old? (b) What is the probability that the person is more than 30 years old?

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